In short, lack of a control variable. There is no alternate universe where players did not go to war to compare against the historical record.On the other hand, every goalie has road numbers made up from the recorded totals of scorers from a variety of rinks around the league than can be compared against their home numbers, making for a much simpler analysis.

Alternative universe. Try alternative sport or the CFL. 1942 RCAF Hurricanes won the Grey Cup. 7 of the players from the team died in WWII.

During the two years in question Bill Durnan played home and road games as you correctly state above. 1943-44, 109 GA, 50 home, 59 away. Pretty solid for a rookie learning the league and rinks.1945-45, 121 GA, 63 home, 58 away. Again very solid on the road.